孔结构表征技术在水泥基材料孔隙结构分析中的应用

摘要

水泥基材料的孔结构对其诸多性能有十分重要的影响，如材料的力学性能、抗冻性等。概述了水泥基材料的孔结构，并对孔结构与水泥基材料的宏观性能进行了探讨；重点讨论了小角射线散射法、压汞法、核磁共振测孔法和同步加速X射线层析扫描测孔法等用于水泥基材料孔结构研究的方法以及相关的理论，并提出各种方法实验中存在的局限性。%Pore structure of cement based materials has a significant influence on many properties ,such as mechanical properties and frost resistance.This paper describes the pore structure of cement based materials,and investigates the relationship between pore structure and macroscopic properties of cement based materials.Characterization methods and the related theories in the cement based materials pore structure analysis are emphatically discussed,including small angle ray scattering method,MIP,technique of NMR and method of syn-chrotron X-ray micro CT.Meanwhile the limitations of testing technologies in pore structure analysis are also proposed.